Joseph f



J. P. LIGHT. SHAFT COUPLING.

No. 78,529. Patented June 2, 1868.

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tait@ taies atmt @ffice JOSEPH? E. LIGHT; 0E WORCESTER, MASSACHUSETTS.

Leners Patent No. 78,529, ma .fuma-186s.

IMPROVEMENT IN SHAFT-GOUPLING.

dit .rlgetule referat .in in ligar Estar tieut mit mating 'aart uf the same.

KNOW ALB MEN BY THESE PRSENTS:

That I, JosEP'H F. LIGHT, of the city and county of Worcester, and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Shaft-Couplings; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, Iforming a part of this specification, and in whichi' Figure 1 represents aperspective .view of myimproved shaft-coupling, as it appears n-use.-

Figure Zrepresents the ends of two shafts, with the clnsping-device removed, showing the mode in which the ends of the shafts are locked or fitted together; and

Figure 3 represents a longitudinal section'on line A B, iig. 1,

To enable those skilled in the a-rt to which iny invention 'belongs' to make and usethe same, I wil proceed to describe, it more in detail. i I

Inthe drawings, the ends of the shafts to be coupled are lettered A A.

The end of each shaft to be coupled is milledor cut away, as shown at a a b, whereby the ends, when placed together as shown in the drawings, loclr together in suche. manner that the ends 1 1 cannot be drawniongitw dinally so long as the projectionsd d ofthe ends of the shafts are heid together, -as shown in figs. 2 and 3 of the drawings.

, B are two clasps, having screw-threads c c ut upon their tapering ends, to t the screw-threads e, in the clamping-nuts C. Y

The'clamping-pieces B B Aand nuts C C may be provided with holes,j for Athe reception of holding-forks o'r. irons, 4by which the clamping-pieces B B can he held whilethe Anuts C C are being screwed up.

' It will be observed that the holding-,nuts `C C are made tapering,to correspond with the tapering ends of the holding-pieces B B, whereby, when the holding-nuts C C are screwed upthe'y gradually compress or clasp the holding-pieces B B securely upon the shafts A A, thereby coupling the ends of said shafts in a very simple yet strong and eectual manner. v

I To prevent the clasping-pieccs B B from being moved out of their relative positions when the nuts C C are applied, curved or other' shaped pins, 2 2, are fastened to the edges of one of the-clasps, while corresponding` grooves or recesses are cut inthe edges of the other clasp, to receive said pins, whereby both of the holding or cl`aspingpieces, B B, are-held or retained th'eir-properjandrelative positions to receive the n'uts C C.

Instead of fastening both of the pins 2 to cne'of the clasps B, one' of the pins may be fastened to the edge of one clasp, and the other to the edge of thonopposite clasp, or only one pin may be used. l

AIt may be remarkedv in this connection that the clasps B 'B are cast so that they can be inished up as one piece; that is, the hole'hored or rimmed ont for the ends of the shafts,and the threads, c, cut-upon their ends, -and the-steady-pins 2 inserted, and then' separated, which' can be easily dono provided sheet-iron strips are placed in the core-boxes in ,such a manner that when thc metal is poured to form the clasps B B, it will be separated by the sheet-iron strips in the proper 'places where they are to be divided.

The'cast metal unites s'uicie'ntiy with the wrought metal'to hold together while the clasps are being nished up, b ut not so closely as to prevent an easy separation ci' the cast from the wrought metal, whena hammer and cold-chisel are'employed for' that'purpose.

' The steady-pins4 2 2 may be sii-inserted that more' than haiti ,oi the pin will be in the edge of one clasp, thereby ohviating the necessity of any other ,fastening to hold the guide-'pin in place.

If preferred in any case, a spline canbe usedin combination with the ends of the shafts A A and the clasping and holding-pieces B B.

It will be observed that my improved coupling is not only simple, but very'rm.

The peculiar locking of th'e ends-of the` shafts preventsall longitudinal and lateral motion to one piece of the shaft. independent of th'oother section, and tlziatgtjoo,- without the use of` stay-pins..

` If preferred, one orboth of the holding-nutsmay be-oa'st with shells or cases to project in over the claspinga pieces, so as to give an. even and more uniform appearance tothe lcoupling when in use.

Having .desorhed mhyvintprovements in ehaft-oouplin`gs3 what I claim as haw.` and qf m'yinvehtion,1qn*ddesire to secure by Lettei'ePatent, ie-

. l1. The eombineten: of the .ende of Athe shafts, whenxsheped or cut awey land appllied to eheh other, en betam' .tially as' shewn in fige. 2`ad 8 of the drawli'gs,-`ao as te pt event the independent lohgitudiual'inovement' of the her'einu'shown and epeeiiied. v ,w v

2. The cembinatien, with the olasps B' B, `of the' gAde-peees o pine 2.2, er either, substantially ne" and for the purposes eet frth. v

JOSEPH F. LIGHT.

-me shaftwith respect to lthe other, withholding-nime for encrcljnghd" eouplg ed shafts in the xnnper Witnesses:

. Taos; H. Denen, GEO. E. MILLER. 

